Earlier this year, Waunakee Utilities updated village trustees on two projects running at the same time that look contradictory until you understand how the village's water system actually works. One municipal well has been offline for years after testing turned up contamination, and the village is still working through the cleanup. At that very same update, staff confirmed the utility was also in the process of building a brand new well and water tower to serve a growing subdivision on the other side of the village.
Neither move was a surprise to anyone who follows Waunakee's utility closely. Both are proof of the same underlying fact that matters more to home buyers here than almost anything else in a listing sheet: in Waunakee, there is one water source, everyone uses it, and the pace of new construction in growth corridors follows the utility's own build schedule, not the builder's.
One System, No Exceptions
Waunakee's village code is direct about this. All properties within the village are required to use the municipal water utility for potable water, and no new private wells for residential, commercial, or industrial use may be approved. The village board reaffirmed this in an ordinance update adopted October 6, 2025, which repealed the old wellhead protection article and replaced it with cleaner language pointing to an official, staff-maintained wellhead protection map instead of forcing a new ordinance revision every time the utility drills a well.
There is one carve out. A property owner who already holds a private well permit under the village code can keep using that well, provided they stay in compliance and renew the permit on schedule. That grandfather clause matters if you are looking at an older Waunakee property that predates full municipal hookup. It does not apply to new construction. Every new home built in the village connects to the same system, drawing from the same five deep wells that reach into the Niagara-Plattville-Trenton aquifer, water the utility describes as coming out of the ground a steady 52 degrees year round.
That single-source model is efficient. It is also the reason a subdivision's construction timeline can hinge on infrastructure most buyers never think to ask about.
Why Well 2 Went Quiet
The clearest recent example is Well 2. Minimal levels of tetrachloroethylene, a solvent commonly associated with dry cleaning and known by its shorthand PCE, were first detected in that well back in 2018. Over time the readings crept toward the Department of Natural Resources' maximum contaminant level for drinking water, and Waunakee Utilities took the well out of service.
Village President Kristin Runge put it plainly to trustees:
"The well was closed out of an abundance of caution."
The village hired Ayres Associates to manage the cleanup, and in May 2025 learned it had secured EPA grant funding to help pay for it. When those funds became available in October 2025, staff issued a request for proposals to bring on a qualified environmental professional, and four engineering firms responded. Deputy Village Administrator Lauren Freeman walked trustees through the process at a mid-February 2026 board meeting. Trustee Nila Frye asked pointed questions about how long residents had been drawing water from the affected well before the shutdown. Trustee Erin Moran called the grant a good example of environmental protection, pointing to other brownfield cleanups the village has handled, including the site beneath the Waunakee Public Library, a former alloy plant where EPA money funded mercury and PCB remediation, and the old Stokely USA canning factory site that is now home to Cannery Row Apartments and the Waunakee Village Center.
None of this is a story about water quality risk today. It is a story about how seriously the utility treats its single water source, and how much institutional muscle goes into keeping that one system clean. For a buyer, the useful takeaway is not fear. It is confirmation that Waunakee manages its water infrastructure as an active system, not a set it and forget it utility.
The Tower Going Up in Kilkenny Farms
At that same February 2026 update, staff confirmed Waunakee Utilities was in the process of constructing a new well and water tower to serve the Kilkenny Farms subdivision. That is not a coincidence of timing. It is what growth in Waunakee actually looks like from the utility's side of the ledger. New rooftops need new water capacity, and that capacity has to be physically built, tested, and brought online before homes in later phases can close.
This is the detail that gets lost when a buyer compares two Waunakee addresses purely on square footage and lot price. A home in an established part of the village is sitting on infrastructure that has been fully built out for years. A home in a newer phase of a growth corridor like Kilkenny Farms may be sitting on infrastructure that is still being installed, tested, or connected.
| Established Waunakee neighborhood | New phase in a growth corridor |
|---|---|
| Municipal water and sewer already built and tested | Water tower or well may still be under construction for that phase |
| Closing timeline depends mostly on the transaction itself | Closing timeline can depend on when the utility completes and certifies the connection |
| No open questions about legacy wells unless the home predates full hookup | New construction has no private well option under current ordinance |
| Utility capacity is a known quantity | Utility capacity is being built in step with the subdivision |
What Joining the System Costs at the Edge
The same pattern shows up when land enters the village in the first place. In February 2025, the village board approved a petition from the Kaltenberg family to annex 324 acres from the Town of Westport, land tied to industrial park growth and expansion for a company called InterCon. As part of that process, Waunakee applied to the Capital Area Regional Plan Commission for an urban service area amendment, the regulatory step needed before public water and sewer can be extended to newly annexed land.
Village code spells out who pays for that extension. When a developer applies for water main service to a new subdivision, the utility estimates the cost of extending mains to the size needed and the applicant advances that estimated cost before construction begins, with a final settle up once actual costs are known. In plain terms, growth in Waunakee pays for its own water infrastructure, and that cost and the sequencing that comes with it is baked into how quickly a new phase can offer closings.
Questions Worth Asking Before You Write an Offer
If you are comparing an established Waunakee address to a lot in a growth corridor, a few questions will tell you more than the builder's marketing brochure will.
- Has this phase's water main and any needed well or tower capacity already been completed and tested, or is it still under construction?
- If the answer is still under construction, what is the utility's estimated completion window, and is that reflected in the builder's closing timeline?
- Does the property carry any legacy private well permit, and if so, when does that permit come up for renewal and what testing does it require?
A builder's sales team can usually answer the first two. The third is worth confirming directly with the village if you are looking at an older home rather than new construction.
The Bottom Line
Every home in Waunakee draws from the same wells and answers to the same rules. What changes from one address to the next is whether the infrastructure serving that specific parcel is already finished or still being built. Well 2's shutdown and cleanup, running alongside new well and tower construction in Kilkenny Farms, is the clearest recent proof that Waunakee's growth is paced by pipe and pump capacity as much as by permits and paint colors. Knowing which side of that line a property sits on is worth more than another walkthrough of the kitchen.
Frequently Asked Questions
Does every home in Waunakee have to be on village water? Yes, with one narrow exception. Properties that already hold a private well permit under the current village code can continue using that well as long as the permit stays in compliance and gets renewed. New construction does not qualify for a new private well under any circumstance.
Is Waunakee's water safe to drink now that a well was taken offline? The village took Well 2 offline as a precaution once PCE readings approached the DNR's drinking water threshold, not because the water in current circulation failed a safety standard. The village has since secured EPA cleanup funding and hired an environmental firm to manage remediation.
If I'm buying new construction in a growth corridor like Kilkenny Farms, how do I know if the water infrastructure is ready? Ask the builder directly whether the phase's water main, well, and tower capacity has been completed and certified by Waunakee Utilities, or whether it is still under construction. This is a fair and normal question during a new construction purchase.
What if the home I'm buying has an older private well? Confirm the well operation permit is current, check when it is due for renewal, and ask about the annual water testing the village requires to keep that permit active.
If you are weighing an established Waunakee street against a newer phase still coming online, MHB Real Estate can walk you through what each timeline actually looks like before you write an offer. Get started.
